Multilevel Iteration Method for Binary Stochastic Transport Problems

04/02/2021

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by   Dmitriy Y. Anistratov, et al.

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This paper presents an iteration method for solving linear particle transport problems in binary stochastic mixtures. It is based on nonlinear projection approach. The method is defined by a hierarchy of equations consisting of the high-order transport equation for materials, low-order Yvon-Mertens equations for conditional ensemble average of the material partial scalar fluxes, and low-order quasidiffusion equations for the ensemble average of the scalar flux and current. The multilevel system of equations is solved by means of an iterative algorithm with the V-cycle. The iteration method is analyzed on a set of numerical test problems.